EP 0353939 A2 19900207 - CT quick change assembly.
Title (en)
CT quick change assembly.
Title (de)
Anordnung zum schnellen Austauschen eines Stromtransformators.
Title (fr)
Assemblage pour changer rapidement un transformateur de courant.
Publication
Application
Priority
US 22664888 A 19880801
Abstract (en)
A molded case circuit breaker with a quick change current transformer assembly, used to sense overcurrent conditions and apply a signal to an electronic trip unit to trip the circuit breaker. The quick change assembly includes an insulated removable plate located adjacent an open cavity in the housing in which the current transformer is located. The current transformer is donut-type disposed about a load-side conductor located in a cavity in the housing rigidly fastened to the circuit breaker frame. In order to replace a current transformer, the insulated backplate is removed. Next the load-side conductor is unfastened and removed from the circuit breaker housing. The current transformer is then removed from the circuit breaker housing.
IPC 1-7
IPC 8 full level
H01H 71/02 (2006.01); H01H 71/12 (2006.01); H01H 73/02 (2006.01); H01H 9/34 (2006.01)
CPC (source: EP KR US)
H01H 71/12 (2013.01 - KR); H01H 71/125 (2013.01 - EP US); H01H 71/60 (2013.01 - KR); H01H 9/342 (2013.01 - EP US); H01H 2001/228 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0353939 A2 19900207; EP 0353939 A3 19910731; EP 0353939 B1 19960612; AU 3783089 A 19900201; AU 622194 B2 19920402; BR 8903775 A 19900320; CA 1329406 C 19940510; CN 1028265 C 19950419; CN 1040114 A 19900228; DE 68926639 D1 19960718; DE 68926639 T2 19970130; IE 80490 B1 19980812; IE 892175 L 19900201; JP 3224098 B2 20011029; JP H0282427 A 19900323; KR 0137872 B1 19980615; KR 900003943 A 19900327; MX 165904 B 19921209; NZ 229874 A 19920526; PH 25628 A 19910808; US 4890081 A 19891226; ZA 895125 B 19900425
DOCDB simple family (application)
EP 89307611 A 19890727; AU 3783089 A 19890704; BR 8903775 A 19890728; CA 605731 A 19890714; CN 89106264 A 19890801; DE 68926639 T 19890727; IE 217589 A 19890706; JP 20014389 A 19890801; KR 890010955 A 19890801; MX 1698589 A 19890731; NZ 22987489 A 19890707; PH 38931 A 19890712; US 22664888 A 19880801; ZA 895125 A 19890705